What type of wave is a sound wave?
longtitudinal wave
transverse wave
The crest is;
the bottom of a wave
the disturbance produced by one complete vibration at the source
the top of a wave
the distance travelled by one cycle
Which are examples of longtitudinal waves?
waves on a rope, water waves, mexican wave
ultrasonic waves, waves on a rope, water waves
sound waves, compression waves on a spring, ultrasonic waves
compression waves on a spring, sound waves, water waves
What type of wave can not be polarised?
transverse
longtitudinal
The apparent change in frequency of waves due to the motion of the source or the observer is called;
interference
doppler effect
diffraction
polarisation
Can mechanical waves travel without a medium?
yes
no
Which is not a property of waves? (wave phenomena)
separation
reflection
What points are at rest when a rope is vibrating?
nodes
amplitude
trough
antinodes
What type of interference is it when the amplitude of a resulting wave is less than the amplitude of the individual waves?
constructive
destructive
Diffraction is;
the bending of waves as it passes from one medium to another
the meeting of two waves and creating another wave
the sideways spreading of waves into a region beyond a gap or around an obstacle
the bouncing off a surface
What is the unit of frequency?
cm
watts
grams
hertz
Which one is an example of an electromagnetic wave?
infra-red waves
ultrasonic waves
water waves
none of the above
What is the speed of sound in air?
340 m/s
300000000 m/s
4180 m/s
390 m/s
Two sources of periodic waves with a constant phase difference are said to be;
interfering
coherant sources
echoing
